The Glenlivet 15 Year Old distinctively rich character is the result of a selective maturation process, as a proportion of the spirit is matured in French oak casks. The Glenlivet was one of the first distilleries to use French Oak in the whisky making process, a technique that has since been imitated by many others. Limousin Oak, which is cut in the Dordogne region of France, is often used to mature fine wines and cognacs. Its low density allows the spirit to penetrate deep into the wood, and we carefully control how long the whisky matures in the casks so as not to overpower the desired result: a unique, pleasing spiciness.